Stuck at double bass drumming

[Nice Guy]

You mentioned the throne. How high is it? How tall are you? What angle is your knee at (below 90°, at 90°, above 90°)? Where is your heel in relation to your knee?

It's a lot of questions, but might lead to some adjustments that help.

I‘m like 1,80m but I dont know my throne height..my knee is probably a little above 90° and my knee is always “behind“ my heel or lined up with it. The last time I played I had the feeling that sitting further forward made it easier to play and keep the tempo. I have a low to mid spring tension btw.